In the world of heavy machinery, industrial automation, and transportation systems (such as elevators and lifting platforms), safety is the top priority. Traditional braking systems are not enough; an instant and fail-safe response is required for any eventuality.
What is a solenoid for emergency brakes?
A solenoid brake is an electromechanical component designed to apply or release a braking force quickly and in a controlled manner. Unlike a simple pull-type solenoid, its main function in these systems is to act as a “safety brake” or “emergency stop brake.”
Safety mechanism: the Fail-Safe principle
Most of our emergency brake solenoids operate under the principle of active safety or “Fail-Safe”:
- Activation: the brake is applied through a mechanical mechanism (usually springs) that is always pressing or gripping the disc or rotating shaft.
- Normal operation: when the system is powered and running, the solenoid is energized and generates a magnetic field that retracts or compresses the braking mechanism, allowing motion.
- Failure or emergency: if a power outage occurs (or the emergency button is pressed, cutting the current), the solenoid de-energizes instantly. The magnetic force disappears, and the mechanical mechanism immediately applies the brake.
Result: The brake is automatically applied in the absence of power, ensuring that the machine stops immediately and safely.
Where we find these solenoids
Safety solenoids are essential in industries where a precise and immediate stop can prevent serious accidents and equipment damage:
- Elevators and lifting platforms: they are the vital component that ensures the cabin locks in place if the motor loses power.
- Cranes and hoists: they ensure the safe stopping of the load when lifting or lowering heavy materials.
- Machine tools: they ensure rapid motor braking in lathes, milling machines, and presses to protect the operator.
- Transport and logistics: they are used in braking systems of automated guided vehicles (AGVs) and conveyor belts.
As specialized manufacturers, at NAFSA we design solenoids with optimized characteristics for industrial braking. When people’s safety and the protection of your machinery depend on an immediate stop, there is no room for compromise. Emergency brake solenoids from NAFSA are your Fail-Safe reliability guarantee.